23. RniNOPXERA. 



495 



uine series in the upper jaw, and in seven in the lower, those of the 

 middle upper series being thrice as broad as long, but narrower than 

 those of the adjoining series. 

 East Indies. 



? a. Young : stulfcd, not in good state. 

 East-India Company. 



From the Collection of the 



7. Rhinoptera polyodon. 



Upper jaw. 



Front. 



Front. 



Lower jaw. 



Upper jaw with fifteen series of hexangular teeth, those of the 

 five middle scries being but little broader than those of the outer 

 ones. Lower jaw with nineteen series of similar teeth, those of the 

 five middle and of the outermost series being nearly 1 wice as broad 

 as the others. 



Hab. ? 



a. Jaws. 



